"I don't know if you guys just heard me, but I was walking back to my RV, which is right there so that we can go back to camp peacefully and they grabbed me by my jacket and said that I was not allowed to continue," she told her viewers. "And they had giant guns and batons and zip ties and they're not letting me go."

When Shailene tried to ask the cop a question, police responded, "We can't talk right here, but you're going to be placed under arrest for criminal trespassing."

The Morton County Sheriff later confirmed to E! News that Shailene was in fact arrested for criminal trespassing. Twenty six other people were also arrested.

"She appreciates the outpouring of support, not only for her, but more importantly, for the continued fight against the construction of the Dakota Access Pipeline," Shailene's rep shared with E! News after the actress was released from jail.